Some of you may remember the hottest sonar device to ever come around for divers that enabled you to know exactly where the dive boat was in relation to where you were at all times.
The Xios Tracker had a wrist display computer that showed not only where the boat was, but how far away.
Xios in Switzerland went out of business, but a company called Thales has apparently purchased the rights and has reintroduced the product under the name NAIDS.
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